namecounter.java

通过将照片像素的提取的运用

import java.util.HashMap;
import java.util.Map;

import acm.program.ConsoleProgram;


public class NameCounter extends ConsoleProgram{
	public void run(){
		enterName();
		printName();
		
	}

	private void enterName() {
		String name = "";
		
		while(true){
			name = readLine("Enter name: ");
			if(name.equals("")) break;
			
			Integer count = map.get(name);
			if(count == null)
				map.put(name, 1);
			else
				map.put(name, (count + 1));
		}
		
	}

	private void printName() {
		for(String name: map.keySet()){
			println("Entry [" + name + "] has count " + map.get(name));
		}
		
	}
	
	private Map<String, Integer> map = new HashMap<String, Integer>();

}